The big news today out of BlizzCon is that StarCraft II is being divided into
Terrans: Wings of Liberty, Zerg: Heart of the Swarm, and Protoss:
Legacy of the Void, three separate standalone campaigns that will be sold
separately, each highlighting one of the game's races, with the decision to
subdivide the real-time strategy sequel said to be the alternative to either
delaying or scaling back the release.
Shacknews quotes
Blizzard's Rob Pardo saying the second and third games "will be like expansion
packs, but we really want them to feel like standalone products." Word is the
Zerg campaign will emphasize RPG elements, the Protoss campaign will focus on
diplomacy, and the Terran campaign will also feature a Protoss mini-campaign.
Shacknews also offers
a couple of cut-scenes, one fully rendered, and the other using the game engine.

Wait, what? Real time strategic diplomacy? I knew the protoss are a bit "sensitive" but this is taking it way too far.

As for the rest of the news. It sounds like a letdown, but it may not be bad, given two conditions. First, all the races are unlocked in multiplayer and skirmish with the initial game. And second, that the single player campaigns are indeed quite long and feel like games in and of themselves.

But I'm a bit skeptical since Rob Padro said the alternative would be to cutback OR delay the release, and release it all as a single game. It sounds like under the "three game" scheme, Bilzzard will end up charging us $50 then $30 then another $30. Rather then waiting a few months and charging $50 for one complete game.